Convert variables from c# to c++

Question

c#

public sealed class RC5
    {
        private readonly uint[] _bufKey = new uint[4];
        private readonly uint[] _bufSub = new uint[26];
};

c++(errors)

class RC5
{
protected:
        unsigned __int32[] _bufKey = new unsigned __int32[4];
        unsigned __int32[] _bufSub = new unsigned __int32[26];
};

Of course I got errors in the c++ code , I don't know how make it right can someone help me please?! Thanks

Answer 1

1. In C++ the array "marker" must follow the variable name, not the type name.
2. You have two ways in C++ to instantiate the array:

a) Make it a fix array:

class RC5 {
  protected:
    unsigned __int32 _bufKey[4];
    unsigned __int32 _bufSub[26];
};

b) Allocate it on the heap:

class RC5 {
  public:
    RC5() :
      _bufKey(new unsigned __int32[4]),
      _bufSub(new unsigned __int32[26]) {
    }
    virtual ~RC5() {
      delete [] _bufKey;
      delete [] _bufSub;
    }
  protected:
    unsigned __int32 *const _bufKey;
    unsigned __int32 *const _bufSub;
};